Changes in cigarette smoking habits between 1955 and 1966.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011153:Population; D012737:Sex Factors; D012907:Smoking / Q000453:epidemiology; D014481:United States